Just a laymen curiosity Alan Gray by your thought that "When an expanding gas cools, doesn't the energy go into work done to cause the expansion". Let us assume that the energy loss of red shift fuels the expansion of our universe. We know that E=hc/(lamda) and derivative of energy w.r.t wavelength is -hc/(lamda)^2 so as wavelength increase the loss in energy decreases so the rate of expansion should decelerate rather than accelerating. So I think we cannot compare this two observations.
On Fri, May 8, 2020 at 6:35 PM Alan Grayson <[email protected]> wrote: > > > On Friday, May 8, 2020 at 5:33:53 AM UTC-6, Bruce wrote: >> >> On Fri, May 8, 2020 at 9:02 PM Alan Grayson <[email protected]> wrote: >> >>> On Friday, May 8, 2020 at 4:24:36 AM UTC-6, Bruce wrote: >>>> >>>> On Fri, May 8, 2020 at 7:11 PM Alan Grayson <[email protected]> >>>> wrote: >>>> >>>>> On Friday, May 8, 2020 at 2:56:50 AM UTC-6, Bruce wrote: >>>>>> >>>>>> On Fri, May 8, 2020 at 6:00 PM Alan Grayson <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> If it's not conserved, as seems implied by the red shift due to >>>>>>> expansion, where does it go? TIA, AG >>>>>>> >>>>>> >>>>>> Silly question. If it is not conserved, it does't have to go anywhere >>>>>> -- it just vanishes. >>>>>> >>>>>> Bruce >>>>>> >>>>> >>>>> When an expanding gas cools, doesn't the energy go into work done to >>>>> cause the expansion? Is it your opinion then, that something cannot come >>>>> from nothing, but something can become nothing? AG >>>>> >>>> >>>> >>>> That's what non-conservation means -- something can come from nothing >>>> and go to nothing. >>>> >>>> Bruce >>>> >>> >>> If you believe in what's called "evidence", and extrapolating from it to >>> create a hypothetical physical theory, can you give a single example of >>> something coming from nothing? AG >>> >> >> Two examples. The universe; Dark energy. >> >> Bruce >> > > We have no clue how the universe began, or even IF it began; and we have > zero understanding of dark energy, other than it probably exists and > gravitationally interacts with ordinary matter. Where's the rigor? AG > > -- > You received this message because you are subscribed to the Google Groups > "Everything List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/d4d24ff0-aa11-4a19-a2a5-00052afa0491%40googlegroups.com > <https://groups.google.com/d/msgid/everything-list/d4d24ff0-aa11-4a19-a2a5-00052afa0491%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAEupHCifBF5qii8bE311oaKAQCqgN1p6WUg%2BV%2BYxWkCvAE%2Bk0w%40mail.gmail.com.
